diff --git a/Tests/test_file_jpeg.py b/Tests/test_file_jpeg.py
index dd83e1c06..7594cb491 100644
--- a/Tests/test_file_jpeg.py
+++ b/Tests/test_file_jpeg.py
@@ -637,6 +637,7 @@ class TestFileJpeg(PillowTestCase):
         # This image has some corrupt exif offsets that unpack to values greater
         # than ssize_t on 32 bit systems
         im = Image.open("Tests/images/corrupt_exif.jpg")
+        assert im is not None # if previous line fails then im will be undefined
 
     def test_photoshop(self):
         im = Image.open("Tests/images/photoshop-200dpi.jpg")